Gave in bank details and NI number and was told monthly pay on 15th every month. Simple.
1st month payment seems higher than expected, stupid me does not mention it.
2nd month I scrupulously count every minute I work and yet again the payment was higher than expected.
I've just asked if they are paying me more than originally stated . But oh no it seems they are paying me cash in hand and I'm now liable for my tax etc 
As I'm not staying long ( other posts) I need to clear this up so asked for a payslip... apparently they don't do those either!
Someone please tell me this isn't normal!